Some of my personal brushes that I tend to favor while drawing. The first one is not a hard round, but a triangle based brush.

#4 brush was created by (seestur)

The rest are paint-like brushes with different effects. You can create a totally new brush by editing each of these.

I don't use the bottom one much, but I'm sure it can be useful for sculpting out tree bark or some winding branches.

No credit is required if you use my brushes in any type of artwork, commercial or personal. Use them and abuse them!

EDIT: So there is less confusion. The images/samples above are brush STROKES, not what the brush tip looks like. When you combine the tips depending on spacing, then you get a stroke. When you load them, you may get a stroke, brush tip name, ectect depending on your brush palate settings. I use strokes since it's easier to see what the brush does, not just what the tip looks like (which can be deceiving.)

I created these in PS CS5. I am clueless as to what other programs aside from Photoshp .abr files are compatible with.

Some of the 'fancier' brushes may lag when they're above 100px. For some reason they do this on my laptop (it doesn't have the greatest specs though.) The worst are textured brushes and those that are duel set-so I try to keep my px size smaller when using them. Use them when they're 60px or smaller, maybe they won't cause so much lag. (: